ranges from southwestern Washington to central California; L. kunthii Hooker & Arnott is known only from central Chile (P. H. Raven 1963c). The species are
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heterophyllum var. scabrellum (Greene) Jepson Lithophragma scabrellum Hooker & Arnott Lithophragma scabrellum var. peirsonii Jepson Tellima heterophylla var
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subtribe Madiinae genusLayia speciesLayia hieracioides (de Candolle) Hooker & Arnott Bot. Beechey Voy., 358. 1839. Bruce G. Baldwin, Susan J. Bainbridge
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parviflora Nuttall ex Hooker & Arnott Bot. Beechey Voy., 338. 1839 Synonyms: H. fusca subsp. parviflora (Nuttall ex Hooker & Arnott) D. D. Keck Potentilla
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cespitosa subspeciesOenothera cespitosa subsp. marginata (Nuttall ex Hooker & Arnott) Munz in N. L. Britton et al. N. Amer. Fl., ser. 2, 5: 101. 1965. (as
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Basionym: Malva malachroides Hooker & Arnott Bot. Beechey Voy., 326. 1838 Synonyms: Hesperalcea malachroides (Hooker & Arnott) Greene Sidalcea vitifolia A
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hederacea Douglas M. sulphurea Gillies ex Hooker & Arnott Malvastrum sulphureum (Gillies ex Hooker & Arnott) Grisebach Sida hederacea (Douglas) Torrey
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LAYOUT:treatment:TUOYAL familyRanunculaceae genusEnemion speciesEnemion occidentale (Hooker & Arnott) J. R. Drummond & Hutchinson Bull. Misc. Inform. Kew 1920: 160. 1920
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speciesCeanothus oliganthus varietyCeanothus oliganthus var. sorediatus (Hooker & Arnott) Hoover Leafl. W. Bot. 10: 349. 1966. Clifford L. Schmidt†, Dieter H
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lasiophyllus (Hooker & Arnott) Payson Ann. Missouri Bot. Gard. 9: 303. 1923. Ihsan A. Al-Shehbaz Basionym: Turritis lasiophylla Hooker & Arnott Bot. Beechey
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tribeAsteraceae tribe Astereae genusGrindelia speciesGrindelia hirsutula Hooker & Arnott Bot. Beechey Voy., 147. 1833. John L. Strother, Mark A. Wetter Endemic
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genusChaenactis sectionChaenactis sect. Chaenactis speciesChaenactis stevioides Hooker & Arnott Bot. Beechey Voy., 353. 1839. James D. Morefield Common names: Desert
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familyZygophyllaceae genusKallstroemia speciesKallstroemia maxima (Linnaeus) Hooker & Arnott Bot. Beechey Voy., 282. 1838. Duncan M. Porter Basionym: Tribulus maximus Linnaeus
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Heliantheae) subtribe Madiinae genusHolozonia speciesHolozonia filipes (Hooker & Arnott) Greene Bull Torrey Bot. Club 9: 122. 1882. Bruce G. Baldwin, John L
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tribeAsteraceae tribe Gnaphalieae genusLogfia speciesLogfia filaginoides (Hooker & Arnott) Morefield Novon 14: 473. 2004. James D. Morefield Common names: California
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subtribe Chaenactidinae genusSchkuhria speciesSchkuhria multiflora Hooker & Arnott J. Bot. (Hooker) 3: 322. 1841. John L. Strother Synonyms: Bahia neomexicana (A
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cocklebur clotbur lampourde épineuse Synonyms: Xanthium ambrosioides Hooker & Arnott Xanthium spinosum var. inerme Bel Treatment appears in FNA Volume 21
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tribeAsteraceae tribe Senecioneae genusTetradymia speciesTetradymia spinosa Hooker & Arnott Bot. Beechey Voy., 360. 1839. John L. Strother IllustratedEndemic Treatment
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congesta subsp. vernalis (D. D. Keck) Tanowitz Hemizonia lutescens Hooker & Arnott Hemizonia luzulifolia var. citrina (Greene) Jepson Hemizonia multicaulis
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LAYOUT:treatment:TUOYAL familyLiliaceae genusCalochortus speciesCalochortus uniflorus Hooker & Arnott Bot. Beechey Voy., 398, plate 94. 1840. P. L. Fiedler, R. K. Zebell
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